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Image Display Device and Production Method Thereof

Inactive Publication Date: 2010-06-03
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0022]Furthermore, according to the first and second image display devices of the present invention, since a cured resin is arranged between the protective panel and the image display panel, advantageous effects from such configuration can also be obtained. For example, reflection at the interface with the protective panel can be suppressed, and sufficient outdoor visibility can also be ensured. In addition, because the cured resin is arranged between the protective panel and the image display panel, compared with when a gap is provided between these panels, sufficient impact resistance and the like can be ensured even if the clearance between the protective panel and the image display panel is thin. Therefore, the present invention is also useful in making the device thinner.
from such configuration can also be obtained. For example, reflection at the interface with the protective panel can be suppressed, and sufficient outdoor visibility can also be ensured. In addition, because the cured resin is arranged between the protective panel and the image display panel, compared with when a gap is provided between these panels, sufficient impact resistance and the like can be ensured even if the clearance between the protective panel and the image display panel is thin. Therefore, the present invention is also useful in making the device thinner.

Problems solved by technology

However, when such a configuration is employed, the gap between the image display panel and the protective panel scatters light, resulting in decreased contrast and luminance.
This leads to the problem that image quality is harmed.
Furthermore, in a configuration in which a gap is present, reflection occurs at the interface between the protective panel and air due to their different refractive indices, which leads to visibility problems, especially outdoors.

Method used

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  • Image Display Device and Production Method Thereof
  • Image Display Device and Production Method Thereof
  • Image Display Device and Production Method Thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0065]A protective panel was pasted on a liquid crystal display panel according to the method illustrated in FIG. 2 to produce a liquid crystal display device. The used protective panel was a transparent plastic panel formed from polymethyl methacrylate (PMMA). A case housing the liquid crystal display panel was used as a fixing jig. An upper face of a light shielding part formed on a peripheral edge of the protective panel was held and fixed with forming an eaves-shaped holding part on this case.

[0066]The resin composition to be arranged between the liquid crystal display panel and the protective panel was prepared by kneading in a kneader 70 parts by weight of an ester compound formed from a maleic anhydride adduct of a polyisoprene polymer and 2-hydroxyethyl methacrylate, 30 parts by weight of dicyclopentenyl oxyethyl methacrylate, 10 parts by weight of 2-hydroxybutyl methacrylate, 30 parts by weight of a hydrogenated terpene resin, 140 parts by weight of a butadiene polymer, 4 p...

example 2

[0072]A liquid crystal display device was produced in the same manner as in Example 1, except that the resin composition to be arranged between the liquid crystal display panel and the protective panel was changed as follows. In the present example too, a liquid crystal display device could be obtained which had hardly any warping of the protective panel, no display unevenness, and excellent outdoor visibility and impact resistance.

[0073]More specifically, the resin composition in the present example was prepared by kneading in a kneader 100 parts by weight of an ester compound formed from a maleic anhydride adduct of a polyisoprene polymer and 2-hydroxyethyl methacrylate, 30 parts by weight of dicyclopentenyl oxyethyl methacrylate, 10 parts by weight of 2-hydroxybutyl methacrylate, 30 parts by weight of a hydrogenated terpene resin, 210 parts by weight of a butadiene polymer, 7 parts by weight of a photopolymerization initiator, and 1.5 parts by weight of a visible region photopoly...

example 3

[0075]A liquid crystal display device was produced in the same manner as in Example 1, except that the resin composition to be arranged between the liquid crystal display panel and the protective panel was changed as follows. In the present example too, a liquid crystal display device could be obtained which had hardly any warping of the protective panel, no display unevenness, and excellent outdoor visibility and impact resistance.

[0076]More specifically, the resin composition in the present example was prepared by kneading in a kneader 70 parts by weight of an ester compound formed from a maleic anhydride adduct of a polyisoprene polymer and 2-hydroxyethyl methacrylate (trade name: UC-203, manufactured by Kuraray Co., Ltd.), 30 parts by weight of dicyclopentenyl oxyethyl methacrylate (trade name: FA512M, manufactured by Hitachi Chemical Co., Ltd.), 10 parts by weight of 2-hydroxybutyl methacrylate (trade name: Light Ester HOB, manufactured by Kyoeisha Chemical Co., Ltd.), 30 parts...

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Abstract

An image display device, and a production method thereof are provided, which are capable of suppressing warping of a protective panel formed from a plastic as much as possible. In an image display device having a liquid crystal display panel 1 and a transparent protective panel 2 formed from a plastic which are arranged facing each other via a cured resin, an outer dimension of the protective panel 2 is made larger than an outer dimension of the liquid crystal display panel 1, curing of a resin composition 4 is carried out in a state where a peripheral edge of the protective panel 2 is fixed with a fixing jig 5, and the peripheral edge of the protective panel 2 is fixed with the fixing jig 5 even after the curing of the resin composition 4. Alternatively, the outer dimension of the protective panel 2 is substantially equal to an outer dimension of the liquid crystal display panel 1, this outer dimension is substantially equal to an inner dimension of a case 8 of the liquid crystal display panel 1 and the protective panel 2, and the curing of the resin composition 4 is carried out in a state where the resin composition 4 is in contact with substantially the whole face of the protective panel 2.

Description

TECHNICAL FIELD[0001]The present invention relates to an image display device having an image display panel such as a liquid crystal display panel, and a method for producing such an image display device. More specifically, the present invention relates to an improved image display device, and production method thereof, in which a cured resin is arranged between an image display panel and a transparent protective panel.BACKGROUND ART[0002]In an image display device such as a liquid crystal display device, to prevent the image display panel from being damaged and to protect the surface thereof, a transparent protective panel such as a glass panel or a plastic panel is arranged on the front face of the image display panel. More specifically, for example, the protective panel is mounted inside a case with a slight gap with respect to the image display panel, by arranging a spacer or the like between the image display panel and the protective panel at the peripheral edge of the image di...

Claims

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Application Information

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IPC IPC(8): G02F1/1333H01J9/20
CPCG02F1/133308G02F2001/133311G02F2001/13332G02F2001/133325G02F1/1333G02F2201/50G02F2201/503G02F2201/54G02F2202/28G02F2001/133331G02F1/133311G02F1/13332G02F1/133325G02F1/133331G09F9/00
Inventor TOYODA, TOMOYUKISHINYA, YOSHIHISAKAMATA, YUSUKE
Owner DEXERIALS CORP
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